Pump-head.



Patented July 4, uses;

S. STBOBRIDGE.

PUMP HEAD.

(Application filed Nov. 5, 1898.) '(No'ModeL) THE NORRIS PETERS co. Mofau'rnq, wAsumc'rcn. n c.

UNITED STATES PATENT OFFICE.

SAMUEL STROBRIDGE, OF BOYNE CITY, MICHIGAN.

PUMP- HEAD.

SPECIFICATION forrning part of Letters Patent No. 628,170, dated July 4, 1899. Application filed November 5, 1898. Serial No. 695,579. (No model.) A

To all whont it may concern;

Be it known thatl, SAMUEL STROBRIDGE, a citizen of the United States, residing at Boyne City, in the county of Oharlevoix and State of Michigan, have invented a new and useful Pu mp-Head, of which thefollowingis a specification.

My invention relates to improvements in pump-heads; and the primary objectis to provide an improved construction adapted for use in connection with a hand-lever or with a windmill-rod to enable the pump to be operated by power.

A further object of the invention is to provide means for operating the piston-rod by hand to secure increased leverage with a full stroke on said piston-rod, and with the rodactuating bar or rack is associated means by whichthe latter is directed to play or travel in a vertical direction whilereducing friction and wear on the working elements.

A further object of the invention is to provide an improved construction of the head designed to secure adjustment of the lever in a manner to compensate for friction and wear and to permit the lever to be adjusted quickly out of engagement with the pistondriving rack when the latter is to be connectedwith the pump-rod of a windmill.

With these ends in view the invention con sists in the ,novel construction and arrangements of parts, which will be hereinafter fully described and claimed. I i

To enable others to understandthe invention, I have illustrated the preferred embodiment thereof in the accompanying drawings, forming a part of this specification, and in which Figure 1 is a perspective view of a pumphead embodying my invention. Fig. 2 is a vertical sectional elevation on the plane indicated by the dotted line 2 2 of Fig. 3. Fig. 3 is a sectional plan view, the plane of the section being indicated by the dotted line 3 3 of Fig. 2.

Like numerals of reference denote like and corresponding parts in each of the several figures of the drawings.

The pump-head of myinvention consists of two approximately yoke-shaped members or sections 10 11, each cast in a single piece of head 24 of the fulcrum-bolt.

metal, or these members, together with the connecting-plate 16," may be cast in a single piece of metal. The members of the head are provided with feet 12 and with bearing-faces 13 to enable the head to rest firmly orsolidly on a well-platform, and the feet are pierced by vertical bolt-holes 14 to receive the bolts 15 or other fastening devices by which the head is secured firmly to a platform. The members of the head are disposed in vertical parallel positions, and they are spaced apart a sufficient distance to accommodate an actuatinglever and a reciprocating rack. or bar, to be hereinafter described. The members may be united together near their upper ends by the plate or web 16, which, as hereinbefore indicated, may be cast with the members; but it is evidentthatthis plate may be in a separate piece and secured firmly to said members 10 11. The upright parts of the members 10 11 are provided with horizontal slots 17, which lie in the same horizontalv plane, and in their outer or exposed faces these head members have the transverse recesses 18, the said recesses being provided with serrated faces 19. The members 10 11 of the head support the horizontal transverse arbors 2O 21, which lie in the same vertical plane and are disposed at one side of the upright portions of the yoke-shaped members. These arbors support the friction-rolls 22, which are mounted loosely onthe arbors to rotate freely thereon, and said rollers are arranged between the spaced head members so as, to be confined thereby against any tendency to move endwise on the arbors. V r

23 designates the fulcrum-bolt for the operating-lever, and this bolt is arranged in a horizontal position and passes loosely through the coincident slots 17 in the members of the pump-head. This fulcrum-bolt isprovided at one end with a head 24, while its other end has a male thread to receive a suitable binding-nut, and on the fulcrum-bolt are fitted the serrated plates or washers 25 26. These plates or washers are fitted. in the transverse recesses 18 of the pump-head for the serrated faces thereof to engage or interlock with the serrations 19 in said pump-head, and against the Washer or plate 25 is adapted to bear the A clamping.

the

nut 27 is screwed on the threaded end of the fulcrum-bolt, so as to draw the head thereof against the plate or washer 25, and this nut is adapted to hold the serrated plates in firm engagement with the serrated portions of the pump-head. The washers and clampnut prevent the fulcrum-bolt from displacement or movement in the horizontal slots of the pump-head; but when the nutis released the bolt and washers may be adjusted so as to move the fulcrum-bolt toward or from the reciprocating rack-bar, whereby the lever may be adjusted to compensate for wear on the rack-bar and the toothed lever-head or the lever may be moved into and out of engagement with said rack-bar.

The operating-lever 28 is provided with a segmental toothed head 29, and this lever is fitted loosely on the fulcrum-bolt 28 and between the members of the pump-head.

30 designates the reciprocating rack-bar, which is offset at 31 .to provide firm bearing fora guide-plate 32. This guide-plate is parallel to the toothed portion of the rack-bar, and it is secured firmly thereto by the screws or bolts 33. The rack-bar is arranged in a vertical position between the parallel members of the pump-head, and in the slots or openings provided in said rack-bar by the plate 32 are fitted the friction-rollers 22. The rack-bar is free to move in a vertical direction within the pump-head, and it is guided or directed by'tlle rollers 22 against any tendency to lateral deflection. This rack-bar may be driven or operated either by the handlever or by the pump-rod of a windmill, according as it is desired to operate the pump by hand or by power. To operatively connect the hand-lever with the rack, the fulcrum-bolt is adjusted in horizontal slots 17 toward the rack until the toothed lever-head engages with the rack-teeth, after which the clamping-nut is tightened on the fulcrumbolt to draw the washers into engagement with the serrated portions of thepump-head, thereby preventing displacement of the fulcrum-bolt in the slots 17-. It is also evident that the fulcrum-bolt may be adjusted to a limited extent for the purpose of compensating for wear on the rack or the lever-head, and as the washers have interlocking engagement with the pump-head a nicety of adjustment of the fulcrum-bolt and lever may be obtained.

In the drawings I have shown the reciprocating rack as provided at its lower end with a socket 34, in which may be fitted the piston-rod of the pump, and this rod and its actuating-bar 30 may be secured firmly together by a clamping-screw 35 or other equivalent device.

To provide for the attachment of the pumprod of a windmill to the reciprocating rackbar, a hole 36 is formed in the rack-bar 30 at or near the upper end thereof, and through this aperture 36 is adapted to be passed a bolt or other suitable device by which the rackbar and the windmill-rod may be coupled detachably together. It is of course understood that the operating-lever is adjusted out of engagement with the reciprocating rack when the pump-rod of the windmill is connected thereto.

My improved construction of the level-and the toothed rack provides means by which the rack and the pump-rod may be actuated bya minimum effort on the part of the operator. The rack is guided to travel in a direct vertical path whether it is actuated by the lever or the windmill, and the friction on this reciprocating rod is reduced to a minimum by the idle friction-rolls.

Changes may be made in the form of some of the parts while their essential features are retained and the spirit of the invention embodied. Hence I do not desire to be limited to the precise form of all the parts as shown, reserving the right to vary therefrom.

What I claim is 1. A pump-head consisting of the parallel members having the horizontal slots, in comhination with a fulcrum-bolt passing through said slots and provided with a clamping-nut, washers or plates having interlocking engagement with said pump-head, a lever fitted on the fulcrum-bolt and provided with a toothed head, and a reciprocating rack guided in the head and engaging with the lever, substantially as described.

2. A pump-head consisting of the parallel members provided with the horizontal slots, the transverse recesses, and the serrations within said recesses, combined with a headed fulcrum-bolt having the clamping-nut, serrated washers fitted on the bolt and within the recesses to engage with the serrations of the pump-head, a serrated lever mounted loosely on the fulcrum-bolt, and a rack-bar guided in the pump-head and meshing with the lever-head, substantially as described.

In testimony that I claim the foregoing as my own I have hereto aifixed my signature in the presence of two witnesses.

' SAMUEL STROBRIDGE.

Witnesses:

WM. PRATT, LE Box 0. WILooX. 

